Hail Swath Map Preview
The Janesville, WI hail swath map preview was last reviewed on August 30, 2026 and shows mapped hail estimates up to 0.75". There are 0 public hail reports, 11 public wind reports, and 1 nearby tornado reports listed for the August 18, 2026 event.
View the August 18, 2026 Janesville, WI hail event on the free interactive hail map, then check a free Hail Report by ZIP to see a more local hail signal for your area.
Impact Area and Population for the Janesville, WI Hail Map
The August 18, 2026 hail swath map for Janesville, WI covers approximately 130 square miles and includes an estimated 25,315 people inside the mapped footprint. The largest mapped area is in the < 0.50" hail band, covering 88 square miles. The highest estimated population exposure is in the < 0.50" hail band with 23,280 people.
| Mapped Hail Band | Impact Area | Population |
|---|---|---|
| < 0.50" | 88 sq mi | 23,280 |
| 0.50-0.75" | 37 sq mi | 1,926 |
| 0.75-1.00" | 4 sq mi | 109 |
Get a free Hail Report by ZIP to see a more local hail signal and whether the August 18, 2026 Janesville, WI hail event may have reached your area.
Housing Exposure Inside the Janesville, WI Hail Swath Map
Inside the August 18, 2026 hail swath map area for Janesville, WI, HailGeeks estimates 8,071 single-family homes, 1,057 townhomes, and 5,617 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the < 0.50" hail band, with 7,260 single-family homes.
| Mapped Hail Band | Single-Family | Townhomes | Multifamily |
|---|---|---|---|
| < 0.50" | 7,260 | 996 | 5,502 |
| 0.50-0.75" | 746 | 61 | 114 |
| 0.75-1.00" | 65 | 0 | 1 |
Use this table to review housing exposure by hail band for the August 18, 2026 Janesville, WI hail map. To check a specific property more closely, use a free Hail Report by Address.
Counties Inside the Janesville, WI Hail Map
Hail from the August 18, 2026 storm was mapped across 6 counties in the Janesville, WI region. Columbia County, WI had the strongest mapped signal, peaking at 0.75" with roughly 678 single-family homes inside the swath.
County pages group every mapped hail event in the area. For a closer look, drop to the city or ZIP level below, or run a free Hail Report by Address.
Cities Inside the Janesville, WI Hail Map
Zooming in, the swath touched 2 cities near Janesville, WI. Fall River, WI had the strongest mapped signal at 0.50", with an estimated 232 single-family homes exposed.
City cards show where the August 18, 2026 Janesville, WI hail activity was mapped, but your ZIP can show a closer local signal. Get a free Hail Report by ZIP, and if the signal looks meaningful, ask a local pro about a Remote Hail Inspection to see whether an on-site roof or exterior review may be worth scheduling.
ZIP Codes Inside the Janesville, WI Hail Swath Map
At the ZIP level, the August 18, 2026 Janesville, WI hail map spans 9 ZIP codes. ZIP 53523 shows the strongest local signal, with mapped hail estimates up to 0.75" and an estimated single-family-home exposure of 513.
Check your ZIP in seconds to see whether hail activity from the August 18, 2026 Janesville, WI event was mapped near your area.
Public Hail, Wind, and Tornado Reports
Public storm report tables connected to the August 18, 2026 hail map for Janesville, WI currently list 0 public hail reports, 11 public wind reports, and 1 tornado reports.
| Date & Time | Hail Size | City | State | Description |
|---|---|---|---|---|
| No public hail reports are available for this event. | ||||
| Date & Time | Wind Speed | City | State | Description |
|---|---|---|---|---|
August 18, 2026 6:30 PM CT | 1 Sw Richfield | WI | Numerous down trees and roof damage reported by sheriff office on Cherokee Trail and Winnebago Rd. Time estimated based on radar. | |
August 18, 2026 6:31 PM CT | 1 S Richfield | WI | Numerous trees down_ minor roof damage on High Knoll Ln and Middle Ridge Dr. in Richfield. Time estimated based on radar. | |
August 18, 2026 6:34 PM CT | 1 Ssw Hubertus | WI | Trees down and a report of a flag pole snapped along Elmwood Rd. reported by Sheriffs office. Time estimated based off of radar. | |
August 18, 2026 6:35 PM CT | 2 Wnw Sussex | WI | HAM radio report of 1 foot tree limbs snapped at the intersection of Good Hope Rd and Highway 164. Time estimated by radar. | |
August 18, 2026 6:38 PM CT | 1 Ne Sussex | WI | Multiple large trees down around Good Hope Rd and Waukesha Ave. in Sussex area. Time estimated based on radar. | |
August 18, 2026 6:41 PM CT | Menomonee Falls | WI | Large pine tree fell on a camper. Time estimated from radar. | |
August 18, 2026 6:43 PM CT | 1 E Menomonee Falls | WI | Social media report of several 1 ft diameter trees down_ with a photo of a tree snapped about 1/4 of the way up in Menomonee Falls. Time estimated by radar. | |
August 18, 2026 6:48 PM CT | 3 Se Waukesha | WI | Trained spotter reports 4 inch diameter tree branch broken with leading edge of storm. Time estimated by radar. | |
August 18, 2026 6:51 PM CT | 2 Se Butler | WI | Social media report of trees snapped in Pinelawn Memorial Park. Photo of a pine snapped approximately 1/4 way up. Time estimated by radar. | |
August 18, 2026 6:55 PM CT | 1 Nw West Milwaukee | WI | NWS employee reports 10 inch diameter branches down near Burbank Elementary School. Time estimated by radar. | |
August 18, 2026 6:56 PM CT | 56 mph | 2 Ene Butler | WI | AWOS station KMWC Milwaukee Timmerman Airport reports 56 mph winds during thunderstorm. |
| Date & Time | Rating | City | State | Description |
|---|---|---|---|---|
August 18, 2026 6:33 PM CT | UNK | 1 Ssw Hubertus | WI | NWS storm survey finds a brief EF0 tornado damage track beginning near the intersection of Elmwood Rd & Timber Stone Way. Max wind speed 80 MPH. Additional details to follow in a Public Information S |
This table includes only public storm reports connected to the August 18, 2026 Janesville, WI storm event. When available, each report may include the time, size or magnitude, city, state, and a short description.
Related Hail Maps in the Janesville, WI Region
We found 6 more hail maps with reports from the same Janesville, WI region as the August 18, 2026 event. These related maps cover storm dates from Jul 9, 2026 through Aug 11, 2026, with mapped hail estimates ranging from 0.75" to 2.50". In this set, the strongest related map reached 2.50", and the most recent map shown is from Aug 11, 2026.
If none of these related Janesville, WI hail maps look close enough to your property, check a free Hail Report by Address. It reviews hail history for a specific location — not just the broader Janesville, WI region — so you can check whether hail activity may have reached your property.
Local Hail Review Options Near Janesville, WI
Not sure whether the August 18, 2026 Janesville, WI hail map matters for your property? Start with a free Hail Report by Address to see whether hail activity was mapped for that property. If the property signal looks meaningful, you can choose a local pro serving the Janesville, WI region and ask about a Remote Hail Inspection before deciding whether an on-site roof or exterior review is worth scheduling.
Check a specific property to see whether hail activity from the August 18, 2026 Janesville, WI event — or another recent hail event — may have been mapped at that address.
Find a roof or exterior pro serving the Janesville, WI region who can help you understand what the property hail signal may mean.
A participating local pro reviews property-level hail history remotely — not just the August 18, 2026 event — to help decide whether an on-site inspection may be worth scheduling.
A free Hail Report by Address and a Remote Hail Inspection can help you look beyond the August 18, 2026 hail map visuals alone. They do not confirm property damage and do not replace an on-site inspection for a property in the Janesville, WI region, but they can help you make a more informed next decision before anyone climbs on the roof.
Frequently Asked Questions
Common questions about the August 18, 2026 Janesville, WI hail event.